mt的开源组件的helloworld

octo-rpc 和 octo-ns

参考https://github.com/Meituan-Dianping/octo-rpc/blob/master/whale/docs/Quick_start.md

和
https://github.com/Meituan-Dianping/octo-ns/tree/master/sdk/mns-sdk



###########.注意的地方：
#############centos7

这个依赖thrift和muduo，

主要检查thrift的配置 和muduo的配置， 如果是/usr/local/之类的我们都可能要改，
我们thrift装在/usr/local/thrift下
muduo自己装可能有问题，尽量用cmake下的

如果是一堆错误，可能是这个

SET( CMAKE_CXX_FLAGS "-std=c++11 -O3")
octo-ns/sdk/mns-sdk/src/mns_worker.h:144:19: 错误：字段‘wp_conn_info’类型不完全
这种错误是boost错误，用 yum的，不要自己装，会把系统装坏了，再yum也不行了

######octo-ns ###############.
### sdk  参考https://github.com/Meituan-Dianping/octo-ns/tree/master/sdk/mns-sdk
#

git clone https://github.com/Meituan-Dianping/octo-ns

yum install epel-release 
yum install git gcc-c++ cmake
yum install uuid uuid-devel libuuid-devel -y
#在编译example的时候需要uuid

yum install boost-devel zlib-devel log4cplus-devel rapidjson-devel

yum install cmake curl curl-devel openssl openssl-devel  protobuf protobuf-devel -y

muduo用octo来安装 ，boost也yum装 


手动安装thrift-0.8.0 前提是要装好boost和protobuf和openssl

./configure --prefix=/usr/local/thrift    --without-python  --without-csharp --without-erlang --without-go --without-haskell --without-ruby   --without-perl  --without-php --without-php_extension

make
make install

export LANG=en_US.UTF-8
提示错误方便点


###########
./build.sh init的时候
可能出现
muduo的安装有问题
#####错误：
‘off_t’ does not name a type

vim muduo/base/StringPiece.h
#include <sys/types.h>


可能有很多错误，尝试-std=c++11

SET(CMAKE_CXX_FLAGS "-std=c++11 -O3")

############
./build.sh only_lib

如果thrift找不到
CMakeLists.txt

SET(THRIFT_COMPILER "/usr/local/thrift/bin/thrift")
SET(THRIFT_INCLUDE_DIR "/usr/local/thrift/include")
#SET(THRIFT_LIBRARY "/usr/local/thrift/lib")
SET(THRIFT_LIBRARY "/usr/local/thrift/lib/libthrift.a")

这三个变量检查一下

INCLUDE_DIRECTORIES("/usr/local/thrift/include") 
或者INCLUDE_DIRECTORIES("/usr/local/thrift/include/thrift")

LINK_DIRECTORIES("/usr/local/thrift/lib")


#########################octo-rpc 框架 

git clone https://github.com/Meituan-Dianping/octo-rpc

#thrift和zookeeper的位置

octo-rpc/whale
cmake/FindThrift.cmake

#set(THRIFT_INCLUDE_DIR_S /usr/include)
#set(THRIFT_INCLUDE_DIR_S /usr/lib64/)
改成
set(THRIFT_INCLUDE_DIR_S /usr/local/thrift/include)
set(THRIFT_LIB_DIR_S /usr/local/thrift/lib)

find_path(THRIFT_INCLUDE_DIR NAMES thrift/ PATHS ${THRIFT_INCLUDE_DIR_S})
#find_library(THRIFT_LIBRARY NAMES libthrift.a PATHS ${THRIFT_INCLUDE_DIR_S})
find_library(THRIFT_LIBRARY NAMES libthrift.a PATHS ${THRIFT_LIB_DIR_S})



CMakeLists.txt
SET(THRIFT_COMPILER "/usr/local/thrift/bin/thrift")
SET(THRIFT_INCLUDE_DIR "/usr/local/thrift/include")
SET(THRIFT_LIBRARY "/usr/local/thrift/lib")

###########
zookeeper: 3.4.6版本，版本不一样api不一样，

yum install automake autoconf cppunit cppunit-devel  ant -y
yum install libtool libtool-devel -y

没有会报错：possibly undefined macro: AC_PROG_LIBTOOL

ant compile-native

前面加
SET(ZOOKEEPER_INCLUDE_DIR "/opt/mt/setup/zookeeper/build/c/build/include")
SET(ZOOKEEPER_LIBRARY "/opt/mt/setup/zookeeper/build/c/build/lib")
后面加
INCLUDE_DIRECTORIES("/opt/mt/setup/zookeeper/build/c/build/include")
LINK_DIRECTORIES("/opt/mt/setup/zookeeper/build/c/build/lib")


否则可能报错：
/opt/mt/octo-rpc/whale/cthrift/util/zk_client.cc:273:70: error: ‘zoo_get’ was not declared in this scope
     ret = zoo_get(m_zh, path, watch, buff_ptr.get(), buffer_len, stat);


SET(CMAKE_CXX_FLAGS "-std=c++11 -O3")

########错误 htonll ntoll  这个在thrift 0.8.0里面重新定义了，和系统的不一样， 所以注意thrift的include的路径，有的带thrift有的不带thrift，这个容易出错
/data2/octo/mtransport/setup/octo-ns/sg_agent/thrid_party/cthrift/include/cthrift/cthrift_tbinary_protocol.tcc:296:39: error: use
      of undeclared identifier 'htons'
  int16_t net = static_cast<int16_t>((htons)(i16))

这种问题都是include路径不对
检查SET 变量 和
INCLUDE_DIRECTORIES("")
LINK_DIRECTORIES("")


INCLUDE_DIRECTORIES(system ${CMAKE_SOURCE_DIR}/thrid/include/thrift)
要改
INCLUDE_DIRECTORIES(system ${CMAKE_SOURCE_DIR}/thrid/include)
#INCLUDE_DIRECTORIES(system ${CMAKE_SOURCE_DIR}/thrid/include/thrift)
INCLUDE_DIRECTORIES(/usr/local/thrift/include/thrift)

LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/thrid/lib/)
LINK_DIRECTORIES(/usr/local/thrift/lib/)


########错误：
/opt/mt/octo-rpc/whale/cthrift/cthrift_client.cc:105:74: error: no matching function for call to ‘make_pair(std::string&, boost::shared_ptr<meituan_cthrift::CthriftClientWorker>&)’
                                                 sp_cthrift_client_worker_));

https://www.cnblogs.com/zl1991/p/7699510.html
https://codeday.me/bug/20170727/45258.html
这个在c++11 的时候，类似java的泛型变严格了 ，需要去掉严格限制

把
map_appkey_worker_.insert(
          std::make_pair<string, WorkerWeakPtr>(map_key,sp_cthrift_client_worker_));
改成
//modify by hao
      map_appkey_worker_.insert(
          //std::make_pair<string, WorkerWeakPtr>(map_key,(WorkerWeakPtr)(sp_cthrift_client_worker_)));
          std::make_pair(map_key,sp_cthrift_client_worker_));


##################在编译example的时候，可能找不到thrift的库或者 muduo的库
要仔细看，如果加了 -std=c++11的选项
则mudo的库在
/usr/local/lib/libmuduo_base_cpp11.a
/usr/local/lib/libmuduo_net_cpp11.a


-- MUDUO_BASE_LIBRARY      /usr/local/lib/libmuduo_base_cpp11.a
-- MUDUO_NET_LIBRARY       /usr/local/lib/libmuduo_net_cpp11.a

要修改cmake/FindMuduo.cmake

find_library(MUDUO_LIBRARY NAMES libmuduo_base_cpp11.a PATHS ${MUDUO_LIBRARY_S})

和 CMakeLists.txt中的

#find_library(MUDUO_BASE_LIBRARY libmuduo_base.a)
find_library(MUDUO_BASE_LIBRARY libmuduo_base_cpp11.a)
#find_library(MUDUO_NET_LIBRARY libmuduo_net.a)
find_library(MUDUO_NET_LIBRARY libmuduo_net_cpp11.a)

如果是thrift找不到：
在CMakeLists.txt里面加


INCLUDE_DIRECTORIES(/usr/local/thrift/include/thrift)

LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/thrid/lib/)
LINK_DIRECTORIES(/usr/local/thrift/lib/)
检查
SET(THRIFT_COMPILER "/usr/local/thrift/bin/thrift")
SET(THRIFT_INCLUDE_DIR "/usr/local/thrift/include")
#SET(THRIFT_LIBRARY "/usr/local/thrift/lib")

SET(THRIFT_LIBRARY "/usr/local/thrift/lib/libthrift.a")

#################